Press fitting method for heat pipe and heat sink

ABSTRACT

A press fitting method for heat pipe and heat sink includes the following steps. a) At least a heat pipe and a heat sink conducting heat to the heat pipe are provided. The heat sink is one of a heat conducting plate or a fin module. The heat sink has a groove for receiving the heat pipe. b) The heat pipe is placed into the groove. c) An end of the heat pipe or the heat pipe under the fins is pressed by a press mold so as to be deformed and fit to the groove as one. Through the above steps, an efficient and quick method is provided and the heat pipe will be tightly fitted to the heat sink so as to achieve a better heat dissipation.

FIELD OF THE INVENTION

The present invention relates to a press fitting method for heat pipeand heat sink, and particular to a press fitting method applied tocomputer, electronic or LED lamp device or related heat dissipatingtechnology.

DESCRIPTION OF THE PRIOR ART

Heat pipe with heat sink are commonly used for the purpose of providinga better heat dissipation to a computer, electronic or LED lamp device.The heat sink is usually a heat conducting plate (base) or a fin module.The heat sink is attached to a heat source so that the heat will bequickly dissipated through the heat pipe connected to the heat sink.

Prior fitting of the heat pipe and the fins of the heat sink is throughwelding which is complicated method and also not friendly toenvironment. Each fin needs to be welded with heated intermediate. Theflowing melting intermediate is hard to control a well uniformity andgaps are sometimes happened so that the fitting between the fins and theheat pipe is hard to achieve. Therefore, the method is not economic.

Some maker will use conducting glue between the heat pipe and the heatsink and as an adhesive. But the macromolecule glue will be solidifiedby time and result in gaps so that the heat dissipation will beeffected.

SUMMARY OF THE INVENTION

Accordingly, the primary object of the present invention is to provide afitting method for heat pipe and heat sink which is fast, effective, andeconomic so as to ensure the tight connection and well heat dissipation.

Through the method, the production of the assembly is fast, and the heatdissipation performance is also raised for the needs.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A to 1D are schematic views showing the pressing of the firstembodiment of the present invention.

FIGS. 2A to 2D are schematic views showing the pressing of the secondembodiment of the present invention.

FIGS. 3A to 3E are schematic views showing the pressing of the thirdembodiment of the present invention.

of the fourth embodiment of the present invention.

FIGS. 5A to 5B are schematic views showing the pressing of the fifthembodiment of the present invention.

BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENT

In order that those skilled in the art can further understand thepresent invention, a description will be provided in the following indetails. However, these descriptions and the appended drawings are onlyused to cause those skilled in the art to understand the objects,features, and characteristics of the present invention, but not to beused to confine the scope and spirit of the present invention defined inthe appended claims.

Referring to FIG. 1A to 1D, the first embodiment of a press fittingmethod for heat pipe and heat sink according to the present invention isillustrated. The embodiment includes the following steps.

a) At least a heat pipe 10 and a heat sink 20 conducting heat to theheat pipe 10 are provided. The heat pipe 10 is approximatelyoval-shaped. The heat sink 20 is one of a plate, base, or fin modulecapable of conducting heat. The heat sink 20 has a groove 21 forreceiving the heat pipe 10 on a side thereof. The heat pipe 10 will beprotruded from a surface of the heat sink 20 while being received by thegroove 21.

b) The heat pipe 10 is placed into the groove 21. A conductivity medium30 is smeared around the junction of the heat pipe 10 and the heat sink20.

c) The end of the heat pipe 10 protruded from the groove 21 is pressedby a press mold 40 so as to be deformed and fit to the groove 21 as one.(shown in FIG. 1D)

Through the above steps, the heat pipe 10 is tightly fitting to the heatsink 20 so as to achieve a better heat dissipation.

Referring to FIGS. 2A to 2D, the second embodiment according to thepresent invention is illustrated. The embodiment has generally the samesteps a, b, and c with the first embodiment.

The difference between the two embodiments is that a heat pipe 10 a ofthe second embodiment is below (or level with) the surface of the heatsink 20 while being received by the groove 21 of the heat sink 20. Theheat pipe 10 a is placed into the groove 21. The conductivity medium 30is smeared to the junction of the heat pipe 10 a and the heat sink 20. Apress mold 40 a has a protrusion for the heat pipe 10 a inside thegroove 21. An end of the heat pipe 10 a pointing out the groove will bepressed by the protrusion of the press mold 40 a so as to be deformedand fit to the groove 21.

Referring to FIG. 3A to 3E, the third embodiment of press fitting methodfor heat pipe and heat sink according to the present invention isillustrated. The embodiment includes the following steps.

a) At least one heat pipe 50 and a heat sink 60 conducting heat to theheat pipe 50 are provided. The heat pipe 50 is approximatelyoval-shaped. The heat sink 60 has a plurality of fin 61. The pluralityof fin 61 has a through hole 62 for receiving the heat pipe 50.

b) The heat pipe 50 is placed into the through hole 62. A conductivitymedium 70 is smeared to the junction of the heat pipe 50 and the throughhole 62. A jig 80 passing through the fins is holding against one sideof the heat pipe 50.

c) Another side of the heat pipe 50 against the jig 80 is pressed by apress mold 82. The heat pipe 50 being pressed is deformed towards thefins 61 so that the fins 61 and the heat pipe 50 will be tightly fittogether (as shown in FIGS. 3D and 3E).

Referring to FIGS. 4A to 4D, the fourth embodiment according to thepresent invention is illustrated. The embodiment has the following stepsa, b, and c generally the same with the third embodiment.

a) At least one heat pipe 50 and a heat sink 60 conducting heat to theheat pipe 50 are provided. The heat pipe 50 is approximatelyoval-shaped. The heat sink 60 has a plurality of fin 61. The pluralityof fin 61 has a through hole 62 for receiving the heat pipe 50.

b) The heat pipe 50 is placed into the through hole 62. A conductivitymedium 70 is smeared to the junction of the heat pipe 50 and the throughhole 62. A press mold 90 has an upper mold 91 and lower mold 92.

c) The upper mold 91 and the lower mold 92 is passing through the fins61 and pressing two opposite sides of the heat pipe 50. The heat pipe 50being pressed is deformed towards the fins 61 so that the heat pipe 50and the fins 61 will be tightly fit together (as shown in FIG. 4 b).

Referring to FIGS. 5A and 5B, the fifth embodiment according to thepresent invention is illustrated. The embodiment has the following stepsa, b, and c generally the same with the third and the fourthembodiments.

a) At least one heat pipe 50 and a heat sink 60 conducting heat to theheat pipe 50 are provided. The heat pipe 50 is approximatelyoval-shaped. The heat sink 60 has a plurality of fin 61. The pluralityof fin 61 has a through hole 62 for receiving the heat pipe 50. However,each of the fins 61 has a vertical extension portion 63 capable ofattaching to a surface of the heat pipe.

b) The heat pipe 50 is placed into the through hole 62 so that theextension portions 63 of the fins 61 are attached to the heat pipe 50. Aconductivity medium 70 is smeared to the junction of the heat pipe 50and the extension portions 63. At least one press mold 95 is provided.

c) The press mold 95 is pressing towards the extension portions 63. Theheat pipe 50 is thus pressed and deformed towards the fins 61 so thatthe heat pipe 50 and the fins 61 will be tightly fit together.

In order that those skilled in the art can further understand thepresent invention, a description will be provided in the following indetails. However, these descriptions and the appended drawings are onlyused to cause those skilled in the art to understand the objects,features, and characteristics of the present invention, but not to beused to confine the scope and spirit of the present invention defined inthe appended claims.

1. A press fitting method for heat pipe and heat sink comprising: atleast a heat pipe and a heat sink conducting heat to the heat pipe; theheat sink having a groove for receiving the heat pipe on a side thereof;b) the heat pipe being placed into the groove; c) an end of the heatpipe in the groove being pressed by a press mold and being deformed soas to tightly fit to the groove.
 2. The press fitting method for heatpipe and heat sink as claimed in claim 1, wherein the heat sink is oneof a heat conducting plate or a fin module.
 3. The press fitting methodfor heat pipe and heat sink as claimed in claim 1, wherein the groove ofthe heat sink is approximately U shape and the heat pipe being receivedinto the groove has a shape of one of a flat cylinder or a longoval-shaped body.
 4. The press fitting method for heat pipe and heatsink as claimed in claim 1, wherein a conductivity medium is smeared tojunction of the heat pipe and the heat sink.
 5. A press fitting methodfor heat pipe and heat sink comprising: a) at least a heat pipe and aheat sink conducting heat to the heat pipe; the heat sink having aplurality of fin; the plurality of fin having a through hole forreceiving the heat pipe; b) the heat pipe being placed into the throughhole; the heat pipe close to the fins being held against by a jig; c) anopposite side of the heat pipe against the jig being pressed by a pressmold; the heat pipe being deformed towards the fins so that the fins andthe heat pipe will be tightly fit together.
 6. The press fitting methodfor heat pipe and heat sink as claimed in claim 5, wherein the pluralityof fin of the heat sink has a through hole for receiving the heat pipe;the through hole and the heat pipe have corresponding shape of one of aflat cylinder or a long oval-shaped body.
 7. The press fitting methodfor heat pipe and heat sink as claimed in claim 5, wherein aconductivity medium is smeared to junction of the heat pipe and thethrough hole.
 8. A press fitting method for heat pipe and heat sinkcomprising: a) at least a heat pipe and a heat sink conducting heat tothe heat pipe; the heat sink having a plurality of fin; the plurality offin having a through hole for receiving the heat pipe; b) the heat pipebeing put into the through hole; a press mold having an upper mold and alower mold; c) the upper mold and the lower mold being passed throughthe fins and pressed two opposite sides of the heat pipe; the heat pipebeing pressed and deformed towards the fins so that the heat pipe andthe fins will be tightly fit together.
 9. The press fitting method forheat pipe and heat sink as claimed in claim 8, wherein the plurality offin of the heat sink has a through hole for receiving the heat pipe; thethrough hole and the heat pipe have corresponding shape of one of a flatcylinder or a long oval-shaped body.
 10. The press fitting method forheat pipe and, heat sink as claimed in claim 8, wherein a conductivitymedium is smeared to junction of the heat pipe and the through hole. 11.The press fitting method for heat pipe and heat sink as claimed in claim5, wherein the plurality of fin has a through hole for receiving theheat pipe; each of the fins has an extension portion capable ofattaching to a surface of the heat pipe.